625444 - Switching from about:home to a remote tab and back results in a gray screen

Status: VERIFIED FIXED

(Firefox for Android Graveyard :: General, defect)

Description

[Wesley Johnston (:wesj)]

Switching from about:home to a remote tab and back results in a gray screen. Likely fallout from the iframe panning stuff.
STR:

1.) Open about:home
2.) Open a link to a remote tab
3.) Switch back to the about:home tab

Results: Nothing is shown.

Comment 1

[Wesley Johnston (:wesj)]

Assigning this to ben because he has a patch mostly in place. We think this likely has to do with local tabs setting their display port when active = false is called. That behavior isn't well defined, and we should probably just avoid doing it, as well as calling other methods like _updateCacheViewport on local tabs.

Comment 2

[Benjamin Stover (:stechz)]

Attachment: Switching to about:home can result in a gray screen

Comment 3

[Wesley Johnston (:wesj)]

Comment on attachment 503584 [details] [diff] [review]
Switching to about:home can result in a gray screen

Looks good. Might be nice to throw something or add some debug spew for the local tab _updateCSSViewport and _updateCacheViewport pieces.

Comment 4

[Mark Finkle (:mfinkle) (use needinfo?)]

(In reply to comment #3)
> Comment on attachment 503584 [details] [diff] [review]
> Switching to about:home can result in a gray screen
> 
> Looks good. Might be nice to throw something or add some debug spew for the
> local tab _updateCSSViewport and _updateCacheViewport pieces.

I'm not sure I'd do that. I have a patch that calls updateCSSViewport on any browser.

Comment 5

[Mark Finkle (:mfinkle) (use needinfo?)]

in bug 479862

Comment 6

[Benjamin Stover (:stechz)]

Pushed http://hg.mozilla.org/mobile-browser/rev/25b64d5b6c94

Comment 7

[Aakash Desai [:aakashd]]

verified FIXED on build:
Mozilla/5.0 (Android; Linux armv71; rv:2.0b9pre) Gecko/20100114 Namoroka/4.0b10pre Fennec/4.0b4pre